HVAC Contractor helping a couple choose a furnace

What size furnace do I need?

When you need to replace your outdated furnace, it’s important to understand one size does not fit all. A system that is not sized properly for your home, will not only impact your comfort, but can mean a shortened life of your furnace, and leave you stuck with higher energy bills.

If you choose a system oversized for your house, you’ll start to experience short cycles. This is because your oversized furnace heated your home too rapidly, turning off before the furnace can reach proper operating temperatures. An undersized or oversized system can lead to reduced lifespan and bigger expenses.

How can you be sure you know the correct furnace size for your home? Begin with a load calculation from the professionals at Kelley Mechanical. A load calculation takes particulars from your home into review and gauges the Btu (a number that indicates the heating capacity of a furnace) necessary to heat your house.

Some Things that Influence Furnace Size

  • Square Footage—What size is the area your furnace will have to heat up? Your technician will be sure to carefully measure the square footage of your home. Not every inch of your home needs to be included during this process. Often, it is more beneficial to account only for the space that needs heating.
  • Home Insulation—Insulation assists in keeping warm air from leaving your home through the cold winter months. It also strongly affects energy efficiency and how large of a heating system you’ll need. Let the experts from Kelley Mechanical evaluate the insulation in your walls and attic. They’ll help you find a best furnace for your house.
  • Type of Window— Just like your walls, the certain type of windows in your home, frame type, glaze type, gas fills/spaces, etc. will play into what heating and cooling needs your home requires.
  • Outdoor Climate—Think about the range of weather you experience in Lexington. You’ll want a furnace that can keep up with the conditions of your environment every year, without overworking itself.

Don’t settle for ‘close enough’ when selecting your new furnace. Let the qualified technicians at Kelley Mechanical help you pick a system that will fit your home properly. When you’re ready to begin, call us at 859-209-3003 or book an appointment online. Whether you have a few more questions about furnace size or want to learn more of the options for your space, our team is happy to help you out.

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